Solar collector



FIG. 1 is a perspective view of a solar collector, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a rear perspective view thereof. 

The ornamental design for a solar collector, as shown and described. 